Android sdk platform tools build tools

SDK Build Tools Release Notes

See Also

Build Tools is a component of the Android SDK required for building Android application code. The latest version of these tools is included in the SDK starter package and installed in the /build-tools/ directory.

You should always keep your Build Tools component updated by downloading the latest version using the Android SDK Manager. By default, the Android SDK uses the most recent downloaded version of the Build Tools. If your projects depend on older versions of the Build Tools, the SDK Manager allows you to download and maintain separate versions of the tools for use with those projects.

To use a specific version of the Build Tools in your application project:

1. In the root folder of your application project, find the project.properties file.
2. Open the file and specify the Build Tools version by adding a buildtools property on a separate line:

1. In the root folder of your application project, find the build.gradle file.
2. Open the file and specify the Build Tools version by adding a buildToolsVersion property to the android section:

Revisions

The sections below provide notes about releases of the Build Tools. To determine which revisions of the Build Tools are available in your SDK, refer to the Installed Packages listing in the Android SDK Manager.

Build Tools, Revision 22.0.1 (March 2015)

Fixed compatibility issues with RenderScript kernels on Android 4.4 (API level 19) to Android 4.1 (API level 16) devices.

Build Tools, Revision 22.0.0 (March 2015)

Added support for Android 5.1 (API level 22).

Build Tools, Revision 21.1.2 (February 2015)

Fixed problem with building data layouts in 32-bit mode.

Build Tools, Revision 21.1.1 (November 2014)

Fixed multidex script issues.

Build Tools, Revision 21.1 (October 2014)

Added multidex file support for APKs and Jack support to address the 64K method reference limit.

Build Tools, Revision 21.0.2 (October 2014)

Complete updates for Eclipse ADT to solve instability issues on Windows platforms.

Build Tools, Revision 21.0.1 (October 2014)

Initial updates for Eclipse ADT on Windows. Please use Revision 21.0.2.

Build Tools, Revision 21.0.0 (October 2014)

Build Tools, Revision 20.0.0 (June 2014)

Build Tools, Revision 19.1.0 (May 2014)

Build Tools, Revision 19.0.3 (March 2014)

Fixed an issue with RenderScript support.

Build Tools, Revision 19.0.2 (February 2014)

Build Tools, Revision 19.0.1 (December 2013)

Build Tools, Revision 19 (October 2013)

Added support for Android 4.4 (API level 19) build targets.

Build Tools, Revision 18.1.1 (September 2013)

Fixed several minor build issues.

Build Tools, Revision 18.1.0 (September 2013)

Fixed issue with RenderScript support mode.

Build Tools, Revision 18.0.1 (July 2013)

Added support for Android 4.3 (API level 18) build targets.

Build Tools, Revision 17 (May 2013)

General Notes:

• Included support for Android 4.2 (API level 17) build targets.
• Decoupled the build-specific components of the Android SDK from the platform-tools component, so that the build tools can be updated independently of the integrated development environment (IDE) components.

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SDK Platform Tools release notes

Android SDK Platform-Tools is a component for the Android SDK. It includes tools that interface with the Android platform, such as adb , fastboot , and systrace . These tools are required for Android app development. They’re also needed if you want to unlock your device bootloader and flash it with a new system image.

Although some new features in these tools are available only for recent versions of Android, the tools are backward compatible, so you need only one version of the SDK Platform-Tools.

Downloads

If you’re an Android developer, you should get the latest SDK Platform-Tools from Android Studio’s SDK Manager or from the sdkmanager command-line tool. This ensures the tools are saved to the right place with the rest of your Android SDK tools and easily updated.

But if you want just these command-line tools, use the following links:

• Download SDK Platform-Tools for Windows
• Download SDK Platform-Tools for Mac
• Download SDK Platform-Tools for Linux

Although these links do not change, they always point to the most recent version of the tools.

Revisions

31.0.3 (August 2021)

• fastboot
  • Support flashing vbmeta_vendor.img for fastboot flashall / update.

31.0.2 (April 2021)

• adb
  • Support forwarding to vsock on linux.
  • Fix bug in adb track-devices where devices over wireless debugging wouldn’t immediately receive updates.
  • Implement preliminary support for mDNS device discovery without a separately installed mDNS service. This is currently disabled by default, and can be enabled by setting the environment variable ADB_MDNS_OPENSCREEN to 1 when starting the adb server.
• fastboot
  • Don’t fail when unable to get boot partition size.
  • Derive device locked state from property instead of parsing the kernel command line.

31.0.1 (March 2021)

• adb
  • Reduce TCP keepalive interval.
  • Improve incremental installation performance.
• fastboot
  • Add support for compressed snapshot merges.
  • Restore legacy A/B support.

31.0.0 (February 2021)

• adb
  • Disable compression on pull by default.

30.0.5 (November 2020)

• adb
  • Improve performance of adb push when pushing many files over a high-latency connection.
  • Improve adb push/pull performance on Windows.
  • Fix adb push —sync with multiple inputs.
  • Improve performance of incremental apk installation.
  • Improve error handling for incremental apk installation.

30.0.4 (July 2020)

• adb
  • Fix fallback to non-incremental apk installation on pre-Android 11 devices.
  • Fix adb install-multi-package .
  • Fix some more crashes related to adb wireless pairing.
  • Improve some error messages.
• fastboot
  • Improve console output on fastboot oem commands.
  • Fix fastboot flashall on older devices such as Nexus 7.

30.0.3 (June 2020)

• adb
  • Fix installation of APKs signed with v4 signature scheme on pre-Android 11 devices.
  • Fix crash when authenticating without ADB_VENDOR_KEYS .
  • Fix crash when using adb -H .

30.0.2 (June 2020)

• adb
  • Improve adb wireless pairing.
  • Fix hang in adb logcat when run before a device is connected.
  • Add adb transport-id to allow scripts to safely wait for a device to go away after root/unroot/reboot.

30.0.1 (May 2020)

• adb
  • Disable adb mdns auto-connection by default. This can be reenabled with the ADB_MDNS_AUTO_CONNECT environment variable.
  • Improve performance of adb install-multi on Android 10 or newer devices.
  • Fix timeout when using adb root/unroot on a device connected over TCP.
  • Update support for wireless pairing.

30.0.0 (April 2020)

• adb
  • Add initial support for wireless pairing.
  • Add support for incremental APK installation.
  • Implement client-side support for compression of adb when used with an Android 11 device.
  • Improve performance of adb push on high-latency connections.
  • Improve push/pull performance on Windows.

29.0.6 (February 2020)

• adb
  • 64-bit size/time support for adb ls when used with an Android 11 device.
  • Support listening on ::1 on POSIX.
  • Client support for WinUSB devices that publish a WinUSB descriptor (required for Android 11) should no longer require a USB driver to be installed.
  • Fix hang when using adb install on something that isn’t actually a file.

29.0.5 (October 2019)

• adb
  • Slight performance improvement on Linux when using many simultaneous connections.
  • Add —fastdeploy option to adb install , for incremental updates to APKs while developing.

29.0.4 (September 2019)

• adb
  • Hotfix for native debugging timeout with LLDB (see issue #134613180). This also fixes a related bug in the Android Studio Profilers that causes an AdbCommandRejectedException , which you can see in the idea.log file.

29.0.3 (September 2019)

• adb
  • adb forward —list works with multiple devices connected.
  • Fix devices going offline on Windows.
  • Improve adb install output and help text.
  • Restore previous behavior of adb connect without specifying port.

29.0.2 (July 2019)

• adb
  • Fixes a Windows heap integrity crash.
• fastboot
  • Adds support for partition layout of upcoming devices.

29.0.1 (June 2019)

• adb
  • Hotfix for Windows crashes (https://issuetracker.google.com/134613180)

29.0.0 (June 2019)

• adb
  • adb reconnect performs a USB reset on Linux.
  • On Linux, when connecting to a newer adb server, instead of killing the server and starting an older one, adb attempts to launch the newer version transparently.
  • adb root waits for the device to reconnect after disconnecting. Previously, adb root; adb wait-for-device could mistakenly return immediately if adb wait-for-device started before adb noticed that the device had disconnected.
• fastboot
  • Disables an error message that occurred when fastboot attempted to open the touch bar or keyboard on macOS.

28.0.2 (March 2019)

• adb
  • Fixes flakiness of adb shell port forwarding that leads to «Connection reset by peer» error message.
  • Fixes authentication via ADB_VENDOR_KEYS when reconnecting devices.
  • Fixes authentication—when the private key used for authentication does not match the public key—by calculating the public key from the private key, instead of assuming that they match.
• fastboot
  • Adds support for dynamic partitions.
• Updated Windows requirements
  • The platform tools now depend on the Windows Universal C Runtime, which is usually installed by default via Windows Update. If you see errors mentioning missing DLLs, you may need to manually fetch and install the runtime package.

28.0.1 (September 2018)

• adb
  • Add support for reconnection of TCP connections. Upon disconnection, adb will attempt to reconnect for up to 60 seconds before abandoning a connection.
  • Fix Unicode console output on Windows. (Thanks to external contributor Spencer Low!)
  • Fix a file descriptor double-close that can occur, resulting in connections being closed when an adb connect happens simultaneously.
  • Fix adb forward —list when used with more than one device connected.
• fastboot
  • Increase command timeout to 30 seconds, to better support some slow bootloader commands.

28.0.0 (June 2018)

• adb:
  • Add support for checksum-less operation with devices running Android P, which improves throughput by up to 40%.
  • Sort output of adb devices by connection type and device serial.
  • Increase the socket listen backlog to allow for more simulataneous adb commands.
  • Improve error output for adb connect .
• fastboot:
  • Improve output format, add a verbose output mode ( -v ).
  • Clean up help output.
  • Add product.img and odm.img to the list of partitions flashed by fastboot flashall .
  • Avoid bricking new devices when using a too-old version of fastboot by allowing factory image packages to require support for specific partitions.

27.0.1 (December 2017)

• adb: fixes an assertion failure on MacOS that occurred when connecting devices using USB 3.0.
• Fastboot: On Windows, adds support for wiping devices that use F2FS (Flash-Friendly File System).

27.0.0 (December 2017)

• Re-fixes the macOS 10.13 fastboot bug first fixed in 26.0.1, but re-introduced in 26.0.2.

26.0.2 (October 2017)

• Add fastboot support for Pixel 2 devices.

26.0.1 (September 2017)

• Fixed fastboot problems on macOS 10.13 High Sierra (bug 64292422).

26.0.0 (June 2017)

• Updated with the release of Android O final SDK (API level 26).

25.0.5 (April 24, 2017)

Fixed adb sideload of large updates on Windows, manifesting as «std::bad_alloc» (bug 37139736).

Fixed adb problems with some Windows firewalls, manifesting as «cannot open transport registration socketpair» (bug 37139725).

Both adb —version and fastboot —version now include the install path.

Changed adb to not resolve localhost to work around misconfigured VPN.

Changed adb to no longer reset USB devices on Linux, which could affect other attached USB devices.

25.0.4 (March 16, 2017)

• Added experimental libusb support to Linux and Mac adb

To use the libusb backend, set the environment variable ADB_LIBUSB=true before launching a new adb server. The new adb host-features command will tell you whether or not you’re using libusb.

To restart adb with libusb and check that it worked, use adb kill-server; ADB_LIBUSB=1 adb start-server; adb host-features . The output should include «libusb».

In this release, the old non-libusb implementation remains the default.

fastboot doesn’t hang 2016 MacBook Pros anymore (bug 231129)

Fixed Systrace command line capture on Mac

25.0.3 (December 16, 2016)

• Fixed fastboot bug causing Android Things devices to fail to flash

25.0.2 (December 12, 2016)

• Updated with the Android N MR1 Stable release (API 25)

25.0.1 (November 22, 2016)

• Updated with the release of Android N MR1 Developer Preview 2 release (API 25)

25.0.0 (October 19, 2016)

• Updated with the release of Android N MR1 Developer Preview 1 release (API 25)

24.0.4 (October 14, 2016)

• Updated to address issues in ADB and Mac OS Sierra

Download Android SDK Platform-Tools

Before downloading, you must agree to the following terms and conditions.

Terms and Conditions

1. Introduction

2. Accepting this License Agreement

3. SDK License from Google

4. Use of the SDK by You

5. Your Developer Credentials

6. Privacy and Information

7. Third Party Applications

8. Using Android APIs

9. Terminating this License Agreement

10. DISCLAIMER OF WARRANTIES

11. LIMITATION OF LIABILITY

12. Indemnification

13. Changes to the License Agreement

14. General Legal Terms

Download Android SDK Platform-Tools

Before downloading, you must agree to the following terms and conditions.

Terms and Conditions

1. Introduction

2. Accepting this License Agreement

3. SDK License from Google

4. Use of the SDK by You

5. Your Developer Credentials

6. Privacy and Information

7. Third Party Applications

8. Using Android APIs

9. Terminating this License Agreement

10. DISCLAIMER OF WARRANTIES

11. LIMITATION OF LIABILITY

12. Indemnification

13. Changes to the License Agreement

14. General Legal Terms

Download Android SDK Platform-Tools

Before downloading, you must agree to the following terms and conditions.

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